A homeless Florida man was arrested Wednesday and charged with plotting to bomb the New York Stock Exchange to force a “reboot” or “reset” of the U.S. government, according to a criminal complaint.

Harun Abdul-Malik Yener came under FBI scrutiny in February after agents received a tip that he was storing bomb-making schematics in a storage unit in Coral Springs, the complaint says.

After they got Yener’s permission, FBI agents searched the storage unit in early March and found spiral-bound notebooks with drawings of land mines, explosives, missiles and other improvised explosive devices, according to the complaint.

Yener told agents at the time that he was creating “rockets” with very “volatile” chemical mixtures that would explode if they were mixed incorrectly, the complaint says. He also claimed he was recruited over Facebook Messenger to join ISIS overseas but ultimately decided against it because he believed the terrorist group would not succeed in achieving its objectives, the complaint says.